Raven House was actually my entry in one of the Building Contests - the specifications were for a Gothic House, believe it or not. Needless to say, Raven House didn't win or even come close, but I've always liked the place and think it suits Nameless and this mission.
As for the showers - soon, I promise. As Nameless continues exploring his new town, Mr Payne is preparing a letter for him to explain the next part of the mission and the showers. It's being done even as we speak.